How to make the new tabs to open the same URL as the startup page?

Hello!
I was wondering if it's possible to configure the Firefox in such a way that the new tabs open exactly the same URL that is typed in the Options. I tried to set browser.newtab.url to about:home but it gives me Firefox Google custom page instead of the startup page that I've set in the Options. Another way I tried is to set the browser.newtab.url value in about:config to the same URL as the startup page URL, but then if I change the URL in the options the new tab URL is not changed. So the question is whether it's possible to make the Firefox read the URL that is used for the startup page and go there when opening a new tab.

Hello!
I was wondering if it's possible to configure the Firefox in such a way that the new tabs open exactly the same URL that is typed in the Options. I tried to set browser.newtab.url to about:home but it gives me Firefox Google custom page instead of the startup page that I've set in the Options. Another way I tried is to set the browser.newtab.url value in about:config to the same URL as the startup page URL, but then if I change the URL in the options the new tab URL is not changed. So the question is whether it's possible to make the Firefox read the URL that is used for the startup page and go there when opening a new tab.

You can use a addon or about:config
<h2>Addon</h2>
* https://addons.mozilla.org/en-us/firefox/addon/new-tab-homepage/‎
<h2>About:config</h2>
# In the [[Location bar autocomplete|Location bar]], type '''about:config''' and press '''Enter'''. The about:config "''This might void your warranty!''" warning page may appear.
# Click '''I'll be careful, I promise!''', to continue to the about:config page.
# Enter '''browser.newtab.url''', double click the result.
# A new window should now show, enter your homepage url in the box, then hit ok.
# Open a new tab, does it work.
If prefs arent saved you need to read the [[How to fix preferences that won't save]] article.